Detachable tread.



0. MOORE. DETACHABLE TREAD- APPLICATION FILED r2345, 1912 Patented June18, 1912.

944 vent 0'6 w vtwaooeo 1 tl'o'anu o onnauno MOORE, or vIsALIA,CALIFORNIA.

DETACHABLE TREAD.

I Application filed February 15, 1912. Serial No. 677,728.

useful Improvements in Detachable Treads; and I do declare the followingto be a full,

clear, and exact description of'the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame. I

This invention relates to resilient wheels and tires, and moreespecially to cushion tires such as are used on large trucks and vansordinarily driven by a ga'solene motor; and the-object of the same is toprovide a detachable or removable tread of metal plates which may besecured over the face of such a cushion tire toprevent wear andslipping. This and other objects are accomplished by the constructionhereinafter more tullydescribed and claimed, and as shown in thedrawings wherein- I I c Figure 1 is a side elevation of a portion 'of awheel rim with this improved tread at tached to its tire. Fig. 2 is anenlarged cross section on the line 2- 2 of Fig. 1. isa perspectivedetail of one of the plates removed.

y In the drawings the letter W designates the driving wheel ofa' motordriven truck of that class whose tires are composed of two rather thickflat rubber bands R surf rounding-the wheel rim and spaced apartslightly to producean annular groove 0, and it is to cushion tires ofthis character that my improved tread is intended'for apdinallytoconform with the curvature of the wheel rim, and across the outer faceof the body are formed two ribs 2 disposed preferably near the edges 3of said body and outstanding from the latter radial t0 the curve onwhich its inner face 4 is struck,

each rib preferably 'apering slightly outward to -a rather sharp edge 5as shown. The ribs are pierced with two holes 6, one near each end ofthe rib, and the adjacent plates are connected by passing bolts 7 Fig. 3

through a pair of such holes so thatthe head 8 of each bolt-will standwithin the I Specification of Letters Patent. PatentedJun'e 112 rib ofone plate and the nut 9 thereof within the rib of the nextadjacent.pl'ate. Finally'the nuts are tightened up, and jam nuts 10 or cotterpins 13 are applied to keep them from being lost. 'The length of thebolts is such that the adjacent rlbs on two contiguous plates will standas far from each other as the two ribs on any one plate, with the resultthat all ribs around a tread thus formed are equally spaced.

In use, several of the nuts are loosened so that the anti-slipping treadmay be passed over the periphery of the two rubber bands B, after whichall nuts are tightened up in 'a manner which will be clear.

An important detail of construction (1011- 1 sists in providing'a fin 11projecting from and preferably cast integral with the curved inner face4 of each plate. and extending along the same on a line at right anglesto the direction of the two ribs, these fins partaking of the curvatureof said inner face and by preference also each tapering.

slightly to its outer edge 12 which is rather sharp but not too much so.In the application of this improved detachable tread to acushion tirecomposed of two rubber bands R,

. the same must be enlarged by loosening several of the nutssufficiently to permit the various fins to be passed over the outermostband R v and entered into the groove C between the two bands, andafterward the several nuts and jam nuts will be tightened up asdescribed and it will be found impossible for the detachable tread tobecome lost laterally off of the wheel. Thus is produced a detachabletread which will prolong the life of a'oushion tire of this character bytaking the wear off of the tire and avoiding the slipping of the latteron smooth pavements or the cutting of the same by ice and the like.Furthermore the use of treads fin on the dished side of each plate'extend-. on adjacent plates will be spaced about. the ing from end toend thereof along the line same as the two ribs on any one plate, for ofits curvature about midway between its the purpose set forth. v edges,and a pair of radially projeetingribs In testimony whereof I havehereunto set 15 5 extending integrally from the outer side my hand inpresence of two subscribing witof the1 plate neiar'thgse eFgesdt-lgareofvillhiclg nesses. are a jacenttie en s 'o sai n, eac ri being piercedwith two holes; and a pair of ORLANDO MOORE" bolts extendingthrough'alined holes in the Witnesses:- 10 adjacent ribs of contiguousplates,the length E. LFEEMs'rER,

of the bolts being 'such that contiguous ribs RALPH H. WALKER.

